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BaseRepresentation
bin1111110111111…
…10110111010001
3100021120110100102
413323332313101
5233042230442
621114102145
73204610454
oct773766721
9307513312
10133164497
1169193504
123871a955
1321785c7b
141398549b
15ba56232
hex7efedd1

133164497 has 4 divisors (see below), whose sum is σ = 133226676. Its totient is φ = 133102320.

The previous prime is 133164487. The next prime is 133164523. The reversal of 133164497 is 794461331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63425296 + 69739201 = 7964^2 + 8351^2 .

It is a cyclic number.

It is not a de Polignac number, because 133164497 - 210 = 133163473 is a prime.

It is a super-2 number, since 2×1331644972 = 35465566522526018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133164497.

It is not an unprimeable number, because it can be changed into a prime (133164467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27758 + ... + 32199.

It is an arithmetic number, because the mean of its divisors is an integer number (33306669).

Almost surely, 2133164497 is an apocalyptic number.

It is an amenable number.

133164497 is a deficient number, since it is larger than the sum of its proper divisors (62179).

133164497 is an equidigital number, since it uses as much as digits as its factorization.

133164497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62178.

The product of its digits is 54432, while the sum is 38.

The square root of 133164497 is about 11539.6922402636. The cubic root of 133164497 is about 510.6572290562.

The spelling of 133164497 in words is "one hundred thirty-three million, one hundred sixty-four thousand, four hundred ninety-seven".

Divisors: 1 2221 59957 133164497